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  User: acer
  Date: 2024/9/18
  Time: 17:20
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--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>session内置对象计数器</title>
    <style>
      h1{
        color: red;
        text-align: center;
        font-size: 7px;
      }
      p{
        color: green;
        text-align: center;
        font-size: 5px;
      }
    </style>
</head>
<body>
    <%! int Num = 0; %>
    <%
      if (session.isNew()) {
          Num+=1;
          session.setAttribute("Num",Num);// 将Num变量值存入session
      }
    %>
     <h1>session计数器</h1>
    <br>
    <p>
        您是第
        <%=session.getAttribute("Num")%>
        个访问本网站的用户
    </p>
</body>
</html>
